Non-Contact Evaluation of Acoustic Nonlinearity of a Laser-Generated Surface Wave in a Plastically Deformed Aluminum Alloy
http://www.tandfonline.com/doi/abs/10.1080/09349847.2014.934496
Noncontact Evaluation of Acoustic Nonlinearity of a Laser-Generated Surface Wave in a Plastically Deformed Aluminum Alloy
- DOI:
- 10.1080/09349847.2014.934496
pages 13-22
- Accepted author version posted online: 01 Jul 2014
Abstract
A noncontact method to evaluate the acoustic nonlinearity of surface waves in a plastically deformed aluminum alloy is proposed. Line-arrayed laser beams modulated with slit masks were used for the generation of narrowband surface waves. A laser-ultrasonic detector using a two-wave mixing (TWM) approach was also employed to detect the surface waves. The specimens were deformed by a stroke-controlled tensile tester so as to generate various degrees of tensile deformation. The experimental results showed that the acoustic nonlinearity of the laser-generated surface waves increased according to the level of tensile deformation. This tendency was in good agreement with our previous results obtained using a contact piezoelectric (PZT)-transducer as the receiver. These results imply that our noncontact technique is suitable for the evaluation of acoustic nonlinearity and can be applied to practical damage assessment.
- 한국도로공사 교통데이터 공모전 - 대한교통학회 회장상 수상 (김진수)
- 한국ITS학회 - 우수논문상
- 비파괴검사학회지 우수 논문상 (김정석, 남태형, 최성호, 장경영)
- 비파괴검사학회지 - 우수논문상
- 비파괴검사학회지 - 우수 논문상
- 대한기계학회 - 우수 학생 논문상
- Slip damage of silicon wafers subjected to continuous infrared laser irradiation
- Relative Measurement of the Acoustic Nonlinearity Parameter using Laser Detection of an Ultrasonic Wave
- Relationship between Second- and Third-order Acoustic Nonlinear Parameters in Relative Measurement
- Non-Contact Evaluation of Acoustic Nonlinearity of a Laser-Generated Surface Wave in a Plastically Deformed Aluminum Alloy
- KSME-SEMES 오픈 이노베이션 챌린지 동상 수상 - 윤성희
- JMST - JMST Contribution Award